Lock



1. AND A. c. MESSINA.

LOCK.

APPLICATION FILED FEB. 4, 1922.

Patented Nov. 14, 1922.

WITNESS l nwzwrjalz WWW . To all whom it-may 0121 06m,

jectsof of such class, in a manneigas hereinagtter; set

Patented Nov. 14, 1922.

JOSEPH MESSINA AND 1 .NGELO C. MESSINA,OF PI$TSBUltGI PENESYLVANIA'.

; LooK.

Be it known that-we Josnrrr 153 a specification.

This invention relates to a IIIOItlSGJOCk for doors, trunks, etc and theprimaryobthe invention g are to; prouide a lock forth, which; requires a4 predetermined 4 L justment o1 {the regulating; hand to, set thetumblen to a particularr position. before the bolt can be; thrown, by thk6y j Vl1lCh iricludes a. hinged cover plate having disguised latchingneans and that cannot be closed until the regulating handz liasbeeinshiftedhto throw the tumbler from theadjusted positiomand 'whichpermits of the removal of the keyonly after the lookingoperation.

Further objects of the L invention are p to produce a lock having. aduplexloclring bolt :utuated by means of a key after a predeterniinedadjustmentof the tumbler, which is simple in itsconstruptionandarrangement, durable and etlicient in itsuse, and comparati velyinexpensive to manut'act ure. v

Vilith these and other objects in yieyv, which will more fully appearvthe nature of the invention is betterunderstood, the consistsPin-combination, arrangement and construction of parts hereinafter jdescrihed, pointed out in theappended claims and illustrated in theaccompanyingdrawing. it being understood that;v many changes may he madein. the size and proportion of the everal parts anddetailsofconstructionWillis-i the scope of the appended without departing from theprinciple,orsacriticing; any of the advantagesof theinvention.

In the drawing forming aportionpt this specification and wherein likenumerals or corresponding parts reference designate throughout theseveral v1eWs:

Figure 1 is a front'yiew of a lock in accordancewith this invention,showing one hasp and the cover plate in the open position. Figure 2 isan end View of the casing cover and associated parts.

Figure 3 is a rear elevation of the casing cover With associated lockingmechanism.

Figure 4 is an elevation showing the interior of the casing.

casing cover andv .be engaged I the operation of the bolt 6 thej kefy.

Application filedlifcbruary 4,.19 2 2. Serial; 1Y0.T.54=, 16 2.

Referring, in detail -t0,. he drawing ,1 .denotes a mortlse.lock,casngmounted. on one of the two relatively movable member'sfto be locked.together having anchored therein, as

.at 2,; a substantially ll-shaped; flat spring 3.

One leg of the L spring :3 abuts against". the

Wall'of the casing, and the other against" the top edge 5 of. the.duplex lockingibolt 6, to bedescribed. "The, casing 1 isfurther provdedwith a centrally disposed bossff,7

having an aperture, adaptedfor, threaded engagementfu ith the screw8:101 securing casingcover 9 to the casing. 1;ancl foi"'piv otallymounting the I looking bolt 6 there- .betWeen. A key sp iridle l 10 isifoi'med integralfw th the casing. 1.

A pair of spacedhasps and mounted on the otherof the, relatively.inoyable nien ilbers is liingedly connectedaas at 13, toan aperturedsecuring plate 1 14. flEach fo'fthe h'asps 11 and 12 is proyided on itsinner face with a. staple 15 adapted to extend through one of the slots16 provided therefor-, in the a l sen i v curved ends 17 and 18 of thelockingiboltfi when in. the. locked; position.

The, ourvede ds 1 bolt 6 extend in opposi vto each other; providing, 1when the, latter is shifted to the locked position,the downward .i 0'ememe n1e end1'7 and the hupwar'd movement ofjthe end 18,throughrespeotiye' staples 16onthe-hasps11 and 12. .Thebolt 6. isformedavith a depending lug. 19, atlj acentvto thev curved end 17, andis fadapted for engagement with the Ward oi the key during thelockingoperati'on. v ii" A tumblrQO is 'pivotally mounted, as.; at 21.,in the lowerportionof the. casingfcover 9, and is operated by a togglemechanism 22 rigidly, connectedby a pin 23 to an'findicae tor handfll,pin 13 heingfjournalled' the lock casing. A graduated scale. 25 isformed 7 on the outer lface or thecasing' cove-r}9, by which thehanda2-lq is; set to. operate thetoggle inechanismjQQ and: shift thetumbler: 2O relative to the; shoulder 26 formed on the bolt 6 adjaoenttothe end18 and perniit of The tumbler 20 toggle mechanism 22 and lockingbolt 6, are all mounted on the inner face of the casing cover 9. Thetoggle mechanism 22 is pivotally connected, as at 27, to the tumbler 20.By vvarying the connection of the indicator hand 24, on the outer faceof the casing cover 9, with the toggle mech- Land, .1801 the lockinganism 22, the indicator hand 24- must be shifted to a predeterminedpoint on the graduated scale 25 before the tumbler 20 is properlypositioned relative to the shoulder 26 to permit of the shifting of thebolt 6 to the unlocked position. A knowledge of the indicator handadjustment is therefore required before the bolt 6 can be shifted by thekey. Different keys may also be employed by shaping the wards thereof tofit projecting ridges, as indicated at 11.0 in its path of travelpermitting only the operation of a key having corresponding notches.

A cover plate 28 is hinged to the lower portion of the casing cover 9and is provided with a staple 29 adapted to be engaged by the latch 30through the slot 31 in the upper portion of the casing 9. A flat springis mounted on the inner face of the cover plate 28 and is provided forthe purpose of throwing the latter to the open position when the latch30 is released. The inner face of the plate 28 is further providedwith atransverse groove to clear the indicator hand 2 f when the plate 28 isin the closed position. The position of the groove 33 in the plate 28 issuch that the indicator hand 2% must be shifted from the adjustedposition before the plate 28 can be closed. "By this arrangement theindicator hand 2% can never be inadvertently left in the adjustedposition thereb areventin its ooeration bi an 7 y l a: l J

unauthorized person even if provided with the key.

The latch 30 is shiftably mounted in a pair of spaced aperture lugs 34:and carries a coil spring 35 mounted therebetween. The action of thespring 35 normally holds the latch 30 in the latched position. The latch30 is provided with an actuating arm 36 I laterally slidable in a groove3'? formed in a corner of the casing 1 in the wall at. The constructionof the arm 36 is such that when in the latched position it ostensiblyforms a portion of the wall 4 which is not readily detected by one notacquainted with its construction.

Besides assuring the positioning of the indicator hand 24-. from theadjusted position, as above stated, the closure of the cover plate 28also provides for the concealment of the key hole 38, and for theprotection of the indicator hand 24 and scale 25.

The bolt 6 is formed with an angularly disposed edge 39 which abutsagainst the pin 23 to limit the movement of the bolt when shifted to theunlocked position, and a stud 40 is fixed in the casing 1 to engage thecurved end 1'? of the bolt 6 to limit its movement when shifted to thelocked position.

When the bolt 6 is thrown into the unlocked position by the key, thelatter will hold the bolt in such position and cannot be removed fromthe lock until the key is returned to permit of its removal from the keyhole 38. Upon such return movement of the key, however, the action ofthe spring 3 in.

engagement with the edge 5 of the bolt 6,

will automatically shift the bolt to the locked position.

The wall 4t of the casing l is provided at each side, thereof with alaterally projecting apertured ear 4:1 by which the casing 1 andassociated parts carried thereby are secured in position.

iiVhat-we claim is l. A look comprising a casing, a locking bolt thereinand shiftable to and from locking position, said bolt having oppositelydisposed ends, a tumbler controlling the movement of the bolt, haspelements adapted to extend into the casing and engaged and locked bysaid ends when the latter are shifted to locking position, means foradjusting the tumbler to permit of the shifting of the bolt to releasethe hasp elements, an indicasaid adjusting device.

3. A lock comprising a pivoted locking element, shiftable to and fromlocking posi tion, means engaged by said element for locking an objecttherewith, a tui'ubler controlling the movement of said element, anadjusting device for said tumbler to permit of the shifting of saidelement to release said means, and an indicator element for saidadjusting device, and a releasable element for concealing said indicatorelement.

In testimony whereof we affix our signatures.

JOSEPH MESSINA. ANGELO o. MnssiNA.

